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Spinel |
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Lenaz D, Youbi N, Min A D, Boumehdi M A, Abbou M B |
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American Mineralogist 99 (2014) 267-275 |
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Low intra-crystalline closure temperatures of Cr-bearing spinels from the mantle |
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xenoliths of the Middle AtlasNeogene-Quaternary Volcanic Field (Morocco): |
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Mineralogical evidence of a cooler mantle beneath the West African Craton. |
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Note:Sample MAR-TF6 |
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Locality:Middle Atlas Neogene-Quaternary Volcanic Field of Morocco |
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_database_code_amcsd 0020065 |
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8.1339 8.1339 8.1339 90 90 90 *Fd3m |
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.125 .125 .125 |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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MgT .125 .125 .125 .760 .0061 .0061 .0061 .0061 0 0 0 |
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FeT .125 .125 .125 .240 .0061 .0061 .0061 .0061 0 0 0 |
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AlM .5 .5 .5 .859 .0050 .0050 .0050 .0050 -.00026 -.00026 -.00026 |
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CrM .5 .5 .5 .141 .0050 .0050 .0050 .0050 -.00026 -.00026 -.00026 |
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O .26276 .26276 .26276 .0081 .0081 .0081 .0081 -.0002 -.0002 -.0002 |
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View JMOL 3-D Structure (permalink) |
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